What are the multi-family constructions?Multifamily construction refers to building types designed to accommodate multiple separate housing units within a single structure or complex. These structures range in size, layout, and occupancy but generally include shared walls, floors, and common spaces.MGOTECH BMSC 517 new sulfate MGO board has excellent vapor permeability and is moisture resistant. There is no need to be with the WRB for the exterior wall sheathing and subfloor sheathing applications.MgO subfloor panels are an effective alternative to conventional wood-based or gypsum-based panels in multifamily buildings, combining the speed of installation with superior fire and sound performance.